Speed-responsive device



W. K. HOI/VE.

sPEEn REsPoNsn/E DEVICE.

APPLICATION FILED IULY24, 1916. '1 ,334,902, Patented Mm". 23, IQIZU.

2 SHEETS-SHEET I.

W. K. HOWE.

SPEED RESPONSIVE DEVICE.

APPLICATION F|LD1uLY24,1916.

Patented Mar. 23, 1920.

FIG. 3.

titl

Hill..

Losanna .Application fik-:rl July 24, 15H6.

To @ZZ wlw/m. t may concern:

Be it lrnown that l, lVVir'ri-nior l. Howe, a citizen et the United Staten, and a resident or the city oft Rochester, in the county oit Monroe and State of New York, have invented. a new and neetul Speeddtleeponeive Device, ot which the :following a specification. v

This invention relatee` to Speed responsive devices which indicate speed hy the movement Lgiven to a movable member or part.

@ne or the principal ohjecte ol this inven tion is to devise a simple and reliahle speed responsive device which will indicate acenretelv by the movement given to a. part or meinher the speed or rate oi. rotation of a driving;` shaft.

it further obj ect of the invention ie to de vise a speed responsive device in which a part will he moved or displaced exactly in proportion to variations in the speed oil a driving` shaft.

l still Yfarther object ot the invention is to simplify and improve the construction oit speed responsive devicee in general.

@ther objects and advantages will appear ae the description oit the invention progresses, and the novel :tcatnres of the invention will he particnlarlir pointed ont in the appended claimsn in doecrihing1 the invention in detail, refH erence is had to the accornpanvinov drawing, wherein l have illnetrated a preferred physical embodiment of my invention, and where-` in litre characters oi reference designate corresponding; parte throughout the several views, and in which:

Figure l. ie an elevation ot a epeed respon* eive device enihodvingg the invention; Fig. Q ie a similar elevation lookingd at one eide out the device ae it ie viewed in Fing. l.; Fig. ie horizontal section thronggh the device talren on the line in Fi Il and looking downward in the direction indicated hy the arrows; Fig; t ie a vertical Section through the device; and Fig. 5 ie a ragrmentary horizontal section through the device taken on the line 5-5 in fl: and lookingl downward in the direction indicated hv the ar- Referring; to the accompanying drawing, the speed responsive device is shown as mounted in a hor or casing; designated gem erallv lov the letter A which is preferably provided: with a removable cov-er (not Specification ci Letters Patent.

.ratenftod Mar. 523, 1920.

Serial tlo. 110949.

shown) and which Serves to support the device and house and protect ite parte. ln the bottom oit the casing; te termed a depression or recesso et in which ie a circular hole enrroimiflcd liv an upwardly projecting' annular llangge 5, and within. thie flange is positioned a hearing,` loue-him;I e (eee Fig. nil). Mounted in the huehinn G a driving-shaft 7 having; a reduced portion 5:3 and jonrnaled at ite ripper end in an :inti-iiriction hall hearing 9 et anv well known or enitahle construction which enpported in a recess in the under tace oit eiipportinpl hraclret l0. te ehown this Supporting1 bracket l0 is termed with epreading` arme ill, cach end ot 'vhich fastened hy a holty i9. to a lnga 13 integral with a wall oit the casing; fr. Faetened to the rednced portion 8 oft' the driw ing; ehat't i" hv ineane oit a pin let or Suitable means ie a supporting; member hl which ie provided with two paire et npright Standards M-151 and lwltl arrann'ed at diametricallv opposite point-s relative to the arie ot the said driving; ehatt. The Supportingv member S has an annular :flange 1'? ertendingI downward outside ot the flange o oit the casing; it, and integral with thinI tlangre 17 a "e curved blades or tine 1S which Serve to throw oil from the recess el; np and around all ot the or the device when the driving` shatt 7 ie rotated. Betweei'i the Supporting' member 5 and the hush-Enr; o ie interposed a wasfaherll ot iiher or similar material. o

Between each pair olf' the ahove mentioned standards lwll' and 1G-161 are disposed `two arrne` Eid-201 and 531%211 having,I

weilc'hted onde and arranged in the -.torno oi a croee (eee Fin* 2); and each pair or' these weighted arme is pivotallv inonnted at the middle point on antidiriction hall lhcaringgje` mounted on holt Q3 fixed in the correspending' pair o'l eenderde, spacingr eleeveel heine need to hold the weighted arme in. spaced relation eo that thev may move hy cach other without interference. The lower enlarged ends oi. the corresponding); weighted arme of each pair are enaced apart hy a. washer E (eee Fin'. li and rigidlv connected together hv a holt 26, the ende of said holt heine: located in recesses in said weighted arme ae clearly shown in the drawing. The upper enlarged ends oli the corresponding weighted arme of each pair are also connected together hy a holt 27,. and on this bolt is revolubly mounted a flanged wheel 28.

A sleeve 29 is slidably mounted on the reduced portion 8 of the driving shaft 7 and threaded on the lower end portion of this sleeve is a flanged nut 30 having notches 31 in the periphery of its flange (see Fig. A compression coil spring 32 encircles the reduced portion 8 of the driving shaft 7 and bears at itslower end against the supporting member S and at its upper end against the flange of the nut 30. Fastened to the sleeve 29, preferably by being pressed tightly thereon, is a collar 33 which is provided with curved arms 34 projecting therefrom in diametrically opposite directions, these arms 84C being positioned so that the flanged rollers 2S carried by the pairs of weighted arms bear upon the upper edges of these curved arms. The collar 33 is formed with two diametrically opposite lugs or projections 35 and 352 (see Fig. 5),'and in the Vlug 35 is threaded a locking pin 36 which extends downward into one ofthe notches 31 in the flanged nut 30 and which serves to ,pins 39 projecting outwardly therefrom at diametrically opposite points, and this ring 38 is held in place by a flanged bushing Al() threaded on the upper end portion of the sleeve 29. Notches l1 are cut in the upper end of the sleeve 29, and a locking finger 42 extends through a hold in the bushing 40 into one of these notches 41 so as to prevent the turning of the bushing 10, the locking finger 42 having a resilient curved tail portion V*which embraces the bushing 40 and holds said locking finger in'place. Integral Vwith the ring 38 is a lug 113 (see Fig. 3) which fits loosely in a notchV 4ta in a speed indicating arm 45; and this speed indicating arm 45 is'. provided with spreading curved arms 46 which have notches 47 in their endsI fitting over the 'pins 39 in the ring 38.

The opera-tion of the speed responsive device embodying this-invention is similar to that of the well known centrifugal ball governor and will be apparent without further explanation.

The upper edges of the curved arms 34 act as cams and are so shaped with due regard to the variation in the downward force exerted by the weighted arms at different speeds and the-varying force of the spring 32 as it is compressed` to different extents,

together with variations in the displacement of the sleeve 29 from strict proportion to changes in speed due to other features ol the construction, such that the sleeve 29 will be moved up and down exactly in proportion to the variations in the speed or rate of rotation of the driving shaft 7; and the speed indicating arm 45 being connected to the sleeve 29 will also be moved up and down exactly in correspondence with the speed of said driving shaft. The fiber washer 19 between the supporting member S and the flange of the bushing 5 is found desirable in order to avoid objectionable heating of the bearings. The tension of the spring 32 may be adjusted by detachino' the wire 37, by screwing up the locking pm 3G until it is moved out of one of the notches 31 in the flanged nut, and then turning said fianged nut until the desired adjustment has been obtained, whereupon the locking pin 36 is again screwed down and fastened by a piece of wire 37.

Although I have particularly described the construction of one physical embodiment of my invention, and explained the operation and principle thereof; nevertheless, ,l desire to have it understood that the forni selected is merely illustrative, but does not exhaust the possible physical embodiments` of the idea of means underlying my invention.

What I claim as new and desire to secure by Letters Patent of the United States, is:

1. In a speed responsive device, in combination: a driving shaft, a supporting member secured to said shaft and having two standards extending lengthwise of the shaft on opposite sides thereof; a pair of weighted arms pivotally connected at their middle points to each standard, the ends of the corresponding` arms of each pair remote from the supporting member being connected together and carrying revoluble rollers; a spring surrounding the shaft and bearing at one end against the supporting member; a sleeve slidably mounted on the shaft and bearing against the other end of the spring; and arms carried by said sleeve and extending outward from the shaft into the path of movement of said rollers, said arms having'their edges shaped to cause movement of the sleeve in proportion to the changes in the speed of rotation of the shaft.

2. In a speed responsive device, a vertical driving shaft, a supporting member attached to said shaft and having a pair of standards projecting upwardly therefrom at diametrically opposite points with reference to the driving shaft, a pair of weighted arms pivotally connected at their middle between each pair of standards on a common axis intersecting the axis of the driving shaft, said parts being balanced about the axis of rotation of the driving shaft,

the lower ends of the corresponding arms of each pair being connected together, revoluble rollers carried by the upper ends of the corresponding arms of each pair, a sleeve slidably mounted on the driving shaft, a spring surrounding the shaft and interposed between said sleeve and said sup porting member, and curved arms carried by the sleeve and extending outwardly from the driving shaft into the path of movementof said rollers, said curved arms having their upper edges shaped to cause movement of the sleeve in proportion to changes in the speed of rotation of the driving shaft.

ln a speed responsive device, in combination: a driving shaft; weighted arms carried by said shaft and adapted to be displaced relatively thereto by centrifugal force when said shaft is rotated; a sleeve slidably mounted on said shaft; a spring for opposing` the sliding movement of the said sleeve in one direction; arms carried by said sleeve, the upperedges of said arms being shaped to cause said sleeve to be moved exactly in proportion to the variations in speed of rotation of the driving shaft; and rollers carried by the Weighted arms and bearing against the arms carried by said sleeve, all of said parts being balanced about the axis of rotation of the driving shaft.

l. ln a speed responsive device, in combination: a vertical driving shaft; a supportig member secured to said shaft and having two pairs of standards projecting up- Ward therefrom at diainetrically opposite points; and equidistant from the axis of the driving shaft; tivo arms pivotally connected at their middle points between each pair of the standards on a connnon axis intersecting the axis of the driving shaft, the outer ends of the corresponding Weighted arms of each pair being connected together; a sleeve slidably mounted on said shaft; a spring for opposing the sliding movement of said sleeve one direction; and means for operatively connecting said Weighted arms and said sleeve.

in a speed responsive device in combination: a lriving shaft arranged vertically; a supporting member secured to said shaft and having tivo standards extending verti cally on opposite sides of shaft; a pair of weighted arms pivotally connected to each standard, said parts being balanced about the axis of rotation of the driving shaft; a spring surrounding the shaft and bearing at one end against said supporting member; a sleeve slidable on the shaft and hav ing arms extending outwardly from the shaft in opposite directions; and rollers carried by the Weighted arms and engaging said arms of the sleeve, said arms of the sleeve having their upper edges shaped to cause movement of the sleeve in proportion to changes in the speed of rotation of the driving shaft.

6. In a speed responsive device, in combination: a driving shaft arranged vertically; a supporting member secured to the shaft and having standards extending vertically on opposite sides of the shaft; a pair of weighted arms pivotally connected to each standard on a common axis intersecting the axis of the driving shaft, the parts being balanced about the axis of rotation of the shaft; a sleeve slidably mounted on the shaft; a spring for opposing the movement of the sleeve in one direction; and means for causing said sleeve to be moved against the opposition of the spring by said Weighted arms, in proportion to the changes in the speed of rotation of the shaft.

7. In a speed responsive device, in com: bination: a supporting casing; a vertical driving shaft mounted in the bottom of thecasing and carrying centrifuge members; said easing having a depression in the bottom around the shaft for holding oil; and members operated by the rotation of the shaft for splashing oil from the depression over the bearings of said centrifuge members.

8. In a speed responsive device, in combination: a driving shaft arranged vertically; a. supporting member fixed to said shaft and carrying Weighted centrifuge members; a support for the shaft; a bearing bushing between the shaft and the support and having a horizontal flange; and a Washer of fiber or similar material between the flange of the bushing and said supporting member.

WINTHROP K. HOWE. 

